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Updated: May 5, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
Focusing of an explosive plasma expansion in a transverse magnetic field
C Plechaty1, R Presura, A A Esaulov
1University of Nevada, Reno, Reno, Nevada 89557, USA.
Abstract:
The dynamics of a laser ablation plasma expanding in an external magnetic field have been investigated with imaging interferometry and shadowgraphy. The diagnostics reveal a new interaction mechanism, namely, the redirection of the explosive plasma expansion into a converging flow. A comparison with three-dimensional ideal magnetohydrodynamic simulation results supports the observation that the efficient lateral plasma confinement causes the plasma to converge on the axis and initiate a directed flow. The resulting collimated flow propagates across the magnetic field in a kinetic regime, which cannot be modeled within the same framework.
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